Home / 103,420.84-142,716.98-63,201.92

Finding the Fourth Proportional to 103,420.84, 142,716.98 and 63,201.92

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Solution

The fourth proportional to 103,420.84, 142,716.98 and 63,201.92 is: 87,216.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,420.84 : 142,716.98 = 63,201.92 : x
  2. Step 2: Convert to fraction form
    103,420.84/142,716.98 = 63,201.92/x
  3. Step 3: Cross multiply
    103,420.84x = 142,716.98 × 63,201.92
  4. Step 4: Simplify right side
    103,420.84x = 9,019,987,152.60
  5. Step 5: Solve for x
    x = 9,019,987,152.60/103,420.84
  6. Step 6: Final answer
    x = 87,216.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.